AT89C5132-ROTIL datasheet(17/38 Pages) ATMEL

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AT89C5132

4173CS–USB–07/04

A-to-D Converter

Table 2. A-to-D Converter DC Characteristics

DD = 2.7 to 3.3V , TA = -40°C to +85°C

Oscillator and Crystal

Schematic

Figure 4. Crystal Connection

Note:

For operation with most standard crystals, no external components are needed on X1

and X2. It may be necessary to add external capacitors on X1 and X2 to ground in spe-

cial cases (max 10 pF). X1 and X2 may not be used to drive other circuits.

Parameters

Table 3. Oscillator and Crystal Characteristics

VDD = 2.7 to 3.3V , TA = -40° to +85°C

Symbol

Parameter

Min

Typ

Max

Units

Test Conditions

Analog Supply Voltage

2.7

3.3

AIDD

Analog Operating Supply

Current

600

µA

DD = 3.3V

AIN1:0 = 0 to AV

Analog Standby Current

µA

DD = 3.3V

ADEN = 0 or PD = 1

AVIN

Analog Input Voltage

AVSS

VDD

REF

Reference Voltage

REFN

REFP

2.4

REF

AREF Input Resistance

Ω

A = 25°C

Analog Input capacitance

A = 25°C

VSS

Symbol

Parameter

Min

Typ

Max

Unit

CX1

Internal Capacitance (X1 -

VSS)10

CX2

Internal Capacitance (X2 -

VSS)10

Equivalent Load Capacitance (X1 - X2)

Drive Level

µW

Crystal Frequency

MHz

Crystal Series Resistance

Ω

Crystal Shunt Capacitance

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